Other issue is that I've been told a Gen III engine stock style A/C compressor will not work with a stock 84 style A/C system requiring an aftermarket (& expensive) sanden a/c compressor. Was told this is due to the new style comp being a variable temp style and the old style evaporator is a single cold system. Is this B.S??? I am already aware of the physical space issue and am actually planning on trying to notch the frame for clearance. Thanks!